Since I can not find a solution to my APC220 problems I decide to use the Xbee solution. However I am a little bit confused even though I read a lot.
1) I read in datasheet for Xbee that it's got one range for indoor and one for outdoors. However in my case I want to communicate from an Arduino to a PC in a range of 450 meters through several walls. Will Xbee Pro do my job?
2) Is Xbee pro with the black wire Antenna ok?
3) What's the difference between the 802.15.4 and the other Xbee pro?